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US 5,210,578 AGranted
Feeding device
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsYoshimi Saito, Kiyoshi Negishi
Life of this patent
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Abstract
In an electrophotographic imaging apparatus using a continuous form recording sheet, provided are a heat roller which is driven to rotate, and a back up roller driven by the heat roller to rotate, and a motor for driving the heat roller to rotate. In the imaging apparatus, the variation of the feeding speed of the recording sheet due to deformation thereof is detected, and the rotational speed of the motor is controlled so as to feed the recording sheet at a predetermined feeding speed.
Claims7
A feeding device for feeding a sheet-shaped member, comprising:
- a pair of rollers being driven to feed said sheet-shaped member which is nipped between said pair of rollers;
- driving means for driving one of said pair of rollers;
- detecting means for detecting the feeding speed of said sheet-shaped member, wherein the feeding speed may vary due to deformation of at least one of said rollers in its radial direction during feed operation;
- and
- controlling means for controlling said driving means in such a fashion that the rotational speed of said at least one of said pair of rollers varies in order to maintain the feeding speed of said sheet-shaped member constant.
2 more elements
Dependencies are inferred from the claim text.